Spring check valve



Dec. 30, 1952 R. s. PALERMO 2,623,540

SPRING CHECK VALVE Filed May l, 1950 ATTORNEY 1 N VE NTOR,

Patented Dec. 30, 1952 UNITED STATES PATENT OFFICE SPRING CHECK VALVEvRafael Soltero Palermo, Arecibo, P. R. Application May 1, 195o, serialNo. 159,302

2 Claims.

This invention relatesto water'valves and Vhas special reference to a"waste-preventing water valve which is'preferably termed an automaticsafety water valve.

One important object of this invention is to provide on the house orbuilding side of a water meter and distant from all outlets a valvewhich will automatically open when water is drawn from the supply lineand automatically close upon cessation of use of water from said supplyline.

A second important object of the invention is to provide anautomatically closing water valve adopted to prevent loss of watercaused by leaking taps, spigots and other valves used to control the useof water from such a supply line.

A third important object of this invention is to provide in such a valvea reducing pipe connection arranged to constitute a valve seat uponclosing of the valve.

With the above and other objects in view, as will be presently apparent,the invention consists in general of certain novel details ofconstruction and combinations of parts hereinafter fully described,illustrated in the accompanying drawings and particularly classified.

In the drawings like characters of reference indicate like parts in theseveral views, and:

Fig. l is a View partly in elevation and partly in section and showingthe relation of this valve to a water meter;

Fig. 2 is an enlarged View showing the valve of this invention partly inelevation and partly in section and illustrating the arrangement of thevalve and its relation to an inlet pipe and a xture supply pipe;

Fig. 3 is a greatly enlarged section partly broken away, the sectionbeing taken diametrically through the valve and disclosing the workingparts;

Fig. 4 is a detail showing of spring connectingmember used herein;

Fig. 5 is a section on the line 5-5 of Fig. 3.

In Fig. 1 of the drawings the invention is shown in connection with abuilding B, a water main W connected to a meter M. In this connection isalso provided a cut-off valve C as is usual in such installations.

Leading from the cut-off valve C is the building supply line IU andinterposed in this line close to the valve C is the valve forming thesubject of the present invention and here indicated in general at V.

Referring now especially to Figs. 2 and 3, it will be seen that thevalve includes a pipe body II on each end of which is screwed a reducingtting I2. In the fitting I2 nearer'the .valve 'C is screwed a nipple I3on which is screwed a cou#- pling I4. The coupling III is connected towhat may be termed the intake section of the supply line I0, the outiiowof this line II) from the valve beingconnected to the remaining reducingfitting l2. The body I I thus provides a valve chamber I5 of largediameter relative to the internal diameter of the nipple I3.

The valve proper or plug is provided with a threaded stern I6 having atone end an eye I'I. Screwed on the stern I6 is a pair of nuts i8 betweenwhich is located a plurality of washers I9 of leather or other yieldablematerial. These washers are gripped on each side by a rigid metal washer20 engaged by the respective nut IB. At least one of the washers I9 isrounded to t neatly `against the inner surface of the tting I2 to whichthe nipple i3 is attached. A coiled tension spring 2I has an eye 22formed at one end and engaged with the eye I 'I. At its other end thespring 2l has an eye 23 extending around a reduced portion 24 formedcentrally of a pin 25 extending through the coupling I4 and riveted inthe walls of said coupling.

In use, whenever any of the fixtures supplied by the line Il on thehouse side of this Valve is opened, the plug will lift off of the seatformed by the inner surface of the tting I2 and water will ow freelythrough the valve since the space around the plug in the valve body IIis greater than the cross-sectional areas of the nipple I3 and pipe IIJ.As soon as the open fixture closes, the spring 2l, aided by the pressureof water in the chamber I5, will cause the plug to seat rmly in thefitting I2 and thus stop further flow even if a leakage exists in afitting supplied by the line II).

Instead of using leather washers, rubber washers may be used. The use ofa valve composed of leather or rubber washers insures a lealrproofconnection, and especially so when the leather washers are used, sincethese absorb a certain amount of water and expand to form asubstantially leakproof valve closure.

What is claimed is:

l. In a valve for the purpose described a valve body of tubular form,reducing iittings screwed on the ends of said body, a nipple screwedinto the smaller end of one of said ttings, a valve plug having ayieldable central portion seated normally against the interior surfaceof the last mentioned fitting intermediate its ends, said plugconsisting of a threaded stem, a plurality of leather washers inabuttingI relation mounted on said stem, 'said washers collectivelyhaving a shape approximating that of the reducing tting at the smallerend thereof, a pair of rigid Washers at each side of the plurality ofleather Washers and nuts on opposite ends of the stem adjacent the rigidWashers, one end of said stem projecting freely through the smaller endof said reducing fitting and having an eye thereon, a pipe couplingscrewed on said nipple, a pin extending diametrically through saidcoupling, and a tension spring having one end connected to said eye andits other end connected to said pin.

2. In a valve for the purpose described a valve body of tubular form,reducing ttings, screwed on the ends of said body, a nipple screwed intothe smaller end of one of said ttings, a Valve 'plug having a yieldablecentral portion seated normally against the interior surface of the lastmentioned fitting intermediate its ends, said plug consisting of athreaded stem, a plurality of leather Washers, inl abutting relationmounted on said stem, said washers collectively having a shapexauaproximatingA that of ther reducing fitting at the smaller; endthereof a pair of rig-id washers at each side of the plurality ofleather washers and RAFAEL SOLTERO PALERMO.

REFERENCES CITED They following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 136,007l Sarsfield Feb. 18, 1873519,43() Leidich May 8, 1894 603,592 Buckingham May 3., 1898 1,238,926Long Sept. 4 1,917 1,661,986 Yetter Mar. 6, 1928 2,170,478 Long et a1Aug. 22 1939 2,393,464- Granberg Jan. 22, 1946

